如果測量一個人的細胞數量,事實上只有25%是屬於人體細胞,其餘的75%均由細菌及真菌所據。2146Please respect copyright.PENANAhNoojgLwxw
2146Please respect copyright.PENANAOoHkSUvQ8K
細菌及真菌可以說是「無處不在」,它們不但寄宿於我們的皮膚外層,亦同時駐紮在我們身體內的腸道及各器官部位,與我們成呈共生關係。2146Please respect copyright.PENANAmRxjkd9fvN
2146Please respect copyright.PENANAg2hTT0AC9z
最近有科學家發表學術文章(Ref1),講述位於汗腺附近的細菌就是腋下異味的其中一個元兇。2146Please respect copyright.PENANAJ7YDmY7DxO2146Please respect copyright.PENANADFgfgvo6zP
2146Please respect copyright.PENANADR1Q0NQ8Pl
(圖1)我們身體的肝腺大致分為兩種,外分泌汗腺(Eccrine Sweat Glands)及大汗腺2146Please respect copyright.PENANAFYKXDx0Pun
(Apocrine Sweat Glands)2146Please respect copyright.PENANAFsVudqg2cc
2146Please respect copyright.PENANAJUonyQeE1u
前者接近遍佈全身,不與毛髮連接。後者主要位於腋下、乳頭及私處部位,與毛髮連接。2146Please respect copyright.PENANAO0OzLN1Jyj
2146Please respect copyright.PENANAegroI3tP0y
外分泌汗腺的主要功能就是散發汗水幫助散熱,調節體溫。2146Please respect copyright.PENANAVYPfyH29xJ
2146Please respect copyright.PENANAokSwOr5TnD
而大汗腺的主要功能,到目前為止仍未能搞得清楚。2146Please respect copyright.PENANAoacnGJfej6
2146Please respect copyright.PENANAI4rNKbY40X2146Please respect copyright.PENANAPe4L6PF27L
2146Please respect copyright.PENANAelFN7drTCd
(圖2)下列三點為文中所找出的異味散發機制。2146Please respect copyright.PENANABF1AZ5bWlT
2146Please respect copyright.PENANATKKjxb9dHi
1.大汗腺釋出無味物質Cys-Gly-3M3SH。2146Please respect copyright.PENANA9DnbAlkhd8
2146Please respect copyright.PENANAI34wQk7VFV
2.腋下某品種的葡萄球菌消化Cys-Gly-3M3SH。2146Please respect copyright.PENANAjxyDTlNW9c
2146Please respect copyright.PENANAifXlNAU1Be
3. 葡萄球菌消化過後,吐出帶有異味的3M3SH。2146Please respect copyright.PENANA880yaknvL5
2146Please respect copyright.PENANAGXHl8hCAnb
換句話說,腋下的異味就是由這些細菌引致而成的。2146Please respect copyright.PENANAnoDm2OWeY7
2146Please respect copyright.PENANA2cyNGcY7g52146Please respect copyright.PENANAesFcmGkjXJ
2146Please respect copyright.PENANA7sMSbHFWsH
(圖3)為作進一步的證實,科學家利用黃金葡萄球菌作對照實驗。2146Please respect copyright.PENANAYYDfsUdZz6
2146Please respect copyright.PENANAPuoViSHwhE
他們發現人葡萄球菌的近親黃金葡萄球菌並沒能夠將無味的Cys-Gly-3M3SH消化成為帶有異味的3M3SH。2146Please respect copyright.PENANA28nwQV4ZeL
但是,當把人葡萄球菌其中一隻酵素轉移到黃金葡萄球菌後,無味的Cys-Gly-3M3SH便能夠被消化成為帶有異味的3M3SH,證實異味是由那隻酵素所致。2146Please respect copyright.PENANApe1ULcLP44
2146Please respect copyright.PENANAId0LW9Fo5W
這隻酵素一直以來並沒有被前人發現,亦即是說,只要能夠研發出抑制那隻酵素的止汗劑的話,腋下的大部份異味亦能得以除去;2146Please respect copyright.PENANA1xlnSTvwq1
2146Please respect copyright.PENANAM0FXTJ7T4T
異味的產生,基本上是由硫醇(Thioalcohol)及脂肪酸(Fatty acid)而成。此文章所談及的機制純屬與硫醇的產生有關,沒有觸及脂肪酸那一方面。2146Please respect copyright.PENANAC5G5zfm6PR
2146Please respect copyright.PENANAiJFRbyLFlf
而臭狐是否由這細菌引起或有份參與,文中並沒有提及。2146Please respect copyright.PENANA3S26eEaDRy
2146Please respect copyright.PENANA5b65JABMnj
2146Please respect copyright.PENANAQdoDtrab3J
如果想我快啲出文的話,請入去Penana網站科普專欄–薯不揀單俾一個like以及Bookmark,這對我非常之重要。2146Please respect copyright.PENANAEQPTnlhyYJ
2146Please respect copyright.PENANAQ09oI3KVXE
Link: https://www.penana.com/story/66244/%E7%A7%91%E6%99%AE%E5%B0%88%E6%AC%84-%E8%96%AF%E4%B8%8D%E6%8F%80%E5%96%AE/toc2146Please respect copyright.PENANAkAu01gipCX
2146Please respect copyright.PENANA8gzYr2wIe5
同時亦可以在Penana網站裡按「買一嚿/半嚿薯仔」,以課金的方式推動我繼續搜羅資料寫文,多謝。2146Please respect copyright.PENANA7QQkmCFGr2
2146Please respect copyright.PENANA29Qiar3Bav
Link:2146Please respect copyright.PENANAafNrWovOAa
https://www.penana.com/user/27349/%E8%96%AF%E4%BB%94%E8%81%9E%E8%8C%B1%E8%8E%89/portfolio2146Please respect copyright.PENANATMwCJTpxfQ
2146Please respect copyright.PENANAmgmjYX9Fpu
2146Please respect copyright.PENANA1mnPhKOMuY
有興趣接收科普資訊的話,歡迎follow IG: potatopigtongue。2146Please respect copyright.PENANAdZ1frWI9E8
2146Please respect copyright.PENANA1WHFefI7MA
Ref1:https://www.nature.com/articles/s41598-020-68860-z2146Please respect copyright.PENANA50rxV4sHJ1
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科普專欄–薯不揀單
作者:
薯仔聞茱莉

篇 #24
深入淺出–腋下異味的來源
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